1. Salt Water/Fresh Water
Experiment
Block 2, Group 6
Sarah, Evan and Blake

2. Question
Does salt water heat up to 50 ̊ Celsius faster
than fresh water under the same conditions?

3. Hypothesis
Original Hypothesis
If salt water is heated up to 50 ̊ Celsius, then the time
taken to heat will be less than the time it took the
fresh water to heat up to 50 ̊ Celsius.
Revised Hypothesis
If fresh water is heated up to 50 ̊ Celsius, then the time
taken to heat will be less than the time it took the
salt water to heat up to 50 ̊ Celsius.

4. Testing Procedure
Materials: Independent Variable- Salt/Fresh Water
· 100 ml of fresh water
· 100 ml of salt water Dependent Variable- Time taken to heat
· Bunsen Burner to 50 degrees Celsius
· Ruler
· 2 glass beakers Controlled Variables- Amount of Water,
· Plastic Beaker flame height, height of beaker from the
· Graduated Cylinder flame, same beakers used
· Eye Dropper
· Computer with Vernier
· Temperature Probes
· Timer/Stopwatch
· Paper Towels

5. Testing Procedure(cont.)
Procedure
Step 1: Measure out 100 ml of fresh water
Step 2: Pour 100 ml of fresh water into glass beaker
Step 3: Set glass beaker with fresh water on ring stand 10 inches up from the table
Step 4: Set up vernier lab quest so that a temperature probe is recording the
temperature of the fresh water in the beaker.
Step 5: Light Bunsen burner
Step 6: Set Bunsen burner flame height to 4 inches
Step 7: Bring out time measuring device
Step 8: Bring Bunsen burner underneath ring stand
Step 9: Once Bunsen burner underneath ring stand start timing
Step 10: Carefully watch the time and temperature
Step 11: Once the vernier lab quest shows that the temperature is 50 ̊ Celsius stop the
timer immediately and record the time.
Step 12: Repeat this 4 times. Then, once finished, Repeat Steps 1-12 with the salt
water.

6. Data
Salt Water Fresh Water
Trial 1 11:28:04 11:13:23
Trial 2 12:46:60 9:02:42
Trial 3 11:07:99 8:44:35
Trial 4 9:36:65 10:20:49
Minutes:Seconds:Milliseconds
Average: 11:04:25 9:69:75
Range: 3:09:95 2:68:88
Maximum: 12:46:60 11:13:23
Minimum: 9:36:65 8:44:35

7. Data(cont.)
Fresh Water
Trial 4
Trial 3
Trial 2
Trial 1
Salt Water
0 2 4 6 8 10 12 14
Minutes/Seconds

8. Analysis/Conclusion
We wanted to know if salt water will heat up to 50 ̊ Celsius faster
than fresh water under the same conditions. Our average for
saltwater was 11:04:25, and our average for fresh water was
9:69:75. Fresh water heats up to 50 ̊ Celsius faster than salt
water does.
Errors that could have occurred were: Not measuring
accurately, not timing accurately, or having the Bunsen burner
flame at different heights. We could definitely be more
accurate, and do more trials to get better data.
We did have to change our hypothesis. We thought that salt
water would heat faster than fresh water, but it actually
heated slower than the fresh water.